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103449

OWNER’S MANUAL

MINIMUM FIREPLACE

CLEARANCE TO

COMBUSTIBLE MATERIALS

Log Size Side Wall Ceiling Floor

18" 24" 30"

16"

42"

5"

NOTICE: A qualified service per-
son must install heater. Follow
all local codes.

 WARNING: Before installing

in a solid fuel burning fireplace,
the chimney flue and firebox must
be cleaned of soot, creosote,
ashes and loose paint by a quali-
fied chimney cleaner. Creosote
will ignite if highly heated.  A dirty
chimney flue may create and dis-
tribute soot within the house. In-
spect chimney flue for damage. If
damaged, operate heater with flue
damper closed.

 WARNING: Seal any fresh air

vents or ash clean-out doors lo-
cated on floor or wall of fireplace.
If not, drafting may cause pilot
outage or sooting. Use a heat-
resistant sealant. Do not seal
chimney flue damper.

 CAUTION: This heater cre-

ates warm air currents. These
currents move heat to wall sur-
faces next to heater. Installing
heater next to vinyl or cloth wall
coverings or operating heater
where impurities (such as to-
bacco smoke, aromatic candles,
cleaning fluids, oil or kerosene
lamps, etc.) in the air exist, may
discolor walls.

IMPORTANT:

 Vent-free heaters add mois-

ture to the air. Although this is beneficial,
installing heater in rooms without enough
ventilation air may cause mildew to form
from too much moisture. See Air for Com-
bustion and Ventilation
, pages 4 through 6.

NOTICE: State or local codes may
only allow operation of this appli-
ance in a vented configuration.
Check your state or local codes.

INSTALLATION

CHECK GAS TYPE

Use only natural gas. If your gas supply is
not natural gas, do not install heater. Call
dealer where you bought heater for proper
type heater.

INSTALLATION AND
CLEARANCES

(Vent-Free Operation Only)

 WARNING: Maintain the mini-

mum clearances. If you can, pro-
vide greater clearances from
floor, ceiling, and adjoining wall.

42"

16"

LOG SIZING REQUIREMENTS

Minimum Firebox Size

Log

Front

Size

Height

Depth

Width

18"

17"

14"

20"

24"

17"

14"

26"

30"

17"

14"

32"

Carefully follow the instructions below. This
will ensure safe installation into a masonry
or UL127-listed manufactured fireplace, or
listed vent-free firebox.

Minimum Wall and Ceiling
Clearances (see Figure 4)

A. Clearances from the side of the fire-

place opening to any combustible wall
should not be less than 16 inches.

B. Clearances from the top of the fireplace

opening to the ceiling should not be less
than 42 inches.

Figure 4 - Minimum Clearance to Wall and
Ceiling

Continued

NOTICE: This heater is intended
for use as supplemental heat. Use
this heater along with your pri-
mary heating system. Do not in-
stall this heater as your primary
heat source. If you have a central
heating system, you may run
system’s circulating blower while
using heater. This will help circu-
late the heat throughout the
house. In the event of a power
outage, you can use this heater
as your primary heat source.

 WARNING: Never install the

heater
• in a bedroom or bathroom un-

less install as a vented appli-
ance, see page 10

• in a recreational vehicle
• where curtains, furniture,

clothing, or other flammable
objects are less than 42 inches
from the front, top, or sides of
the heater

• in high traffic areas
• in windy or drafty areas

Summary of Contents for VS18NR

Page 1: ...roperty damage Refer to this manual for cor rect installation and operational proce dures For assistance or additional in formation consult a qualified installer service agency or the gas supplier WAR...

Page 2: ...with a fire placescreeninplace Makesurefireplace screen is closed before running heater 8 This log heater is designed to be smoke less If logs ever appear to smoke turn offheaterandcallaqualifiedservi...

Page 3: ...ed to ANS Z21 11 2 standard for unvented heaters State and local codes in some areas prohibit the use of vent free heaters This heater may also be operated as a vented decorative ANS Z21 60 product by...

Page 4: ...rating of one perm 6x10 11 kg per pa sec m2 or less with open ings gasketed or sealed and b weather stripping has been added on openable windows and doors and c caulking or sealants are applied to ar...

Page 5: ...ances Direct vent draws combustion air from the outdoors and vents to the outdoors 4 Compare the maximum Btu Hr the space can support with the actual amount of Btu Hr used _________________ Btu Hr max...

Page 6: ...d Crawl Space To Crawl Space To Attic Or Remove Door into Adjoining Room Option 3 Ventilation Grills Into Adjoining Room Option 2 Ventilation Grills Into Adjoining Room Option 1 12 12 Figure 2 Ventila...

Page 7: ...l codes INSTALLATION CHECK GAS TYPE Use only natural gas If your gas supply is not natural gas do not install heater Call dealer where you bought heater for proper type heater INSTALLATION AND CLEARAN...

Page 8: ...ntel If not using a mantel follow the information below You must have noncombustible material s above the fireplace opening Noncombus tible materials such as slate marble tile etc must be at least 1 2...

Page 9: ...pening Underside of Mantel Shelf Mantel Shelf 12 A 20 241 2 271 2 30 All minimum distances are in inches 2 1 2 6 8 10 Minimum Noncombustible Material 8 Min 12 15 18 All minimum distances are in inches...

Page 10: ...rsarelevel Ifheaterisnotlevel heaterwill not work properly Area of Various Standard Round Flues Diameter ins Area sq ins 5 20 sq inches 6 29 sq inches 7 39 sq inches 8 51 sq inches INSTALLING DAMPER C...

Page 11: ...ed Purchase the optional A G A design certified manual shutoff valve from your dealer See Accessories page 23 Minimum inlet pressure for purpose of input adjustment Figure 13 Gas Connection Tee Joint...

Page 12: ...ts individual manual shutoff valve from gas supply piping system Pressures in excess of 1 2 psig will damage heater regulator 2 Cap off open end of gas pipe where manual shutoff valve was connected 3...

Page 13: ...ure 16 Push back of logs flush with metal grate bar Note 18 model has only one front log 2 Rest bottom middle log 2 behind metal posts on front burner Make sure the grooves in the bottom of the log fi...

Page 14: ...re to smell next to the floor because some gas is heavier than air and will settle on the floor WHAT TO DO IF YOU SMELL GAS Do not try to light any appliance Do not touch any electric switch do not us...

Page 15: ...em etc For wall thermostat operation follow in struction supplied with thermostat acces sory GWMT1 For wall switch operation followinstructionssuppliedwithGWMS2 OPTIONAL REMOTE OPERATION NOTICE You mu...

Page 16: ...Off with the Hand Held Remote Unit Figure 24 Thermostat Hand Held Remote Control Unit Selections GHRCT only The log heater will automatically cycle between pilot and the heat setting that has been se...

Page 17: ...e pattern Theincorrectpilotflameisnottouch ing the thermocouple This will cause the thermocouple to cool When the thermo couple cools the heater will shut down If pilot flame pattern is incorrect as s...

Page 18: ...ware store or home center may carry com pressed air in a can You can use a vacuum cleaner in the blow position If using com pressed air in a can please follow the direc tions on the can If you don t f...

Page 19: ...D PROBLEM When ignitor button is pressed there is no spark at ODS pilot When ignitor button is pressed there is spark at ODS pilot but no ignition ODS pilot lights but flame goes out when control knob...

Page 20: ...en using furniture polish wax carpet cleaners or similar products 1 Replace 9 volt batteries in receiver and remote control OBSERVED PROBLEM One or both burners do not light after ODS pilot is lit Del...

Page 21: ...SIBLE CAUSE 1 Metal expanding while heating or con tracting while cooling 1 Heater burning vapors from paint hair spray glues cleaners chemicals new carpet etc See IMPORTANT state ment above 2 Low fue...

Page 22: ...r TECHNICAL SERVICE You may have further questions about in stallation operation or troubleshooting If so contact DESA International s Technical Service Department at 1 800 DESA LOG 1 800 337 2564 You...

Page 23: ...LL MOUNT ON OFF SWITCH GWMS2 Not Shown For all models Allows the gas log heater to be turned on and off with a wall switch WALL MOUNT THERMOSTAT SWITCH GWMS1 Not Shown For all models The desired comfo...

Page 24: ...URAL GAS LOG HEATER DESA INTERNATIONAL ILLUSTRATED PARTS BREAKDOWN VARIABLE CONTROL CFS18NR VS18NR VS24NR VS30NR 8 9 10 11 8 8 12 13 23 14 26 27 6 6 16 19 31 21 22 29 30 17 24 20 15 28 18 10 1 10 2 6...

Page 25: ...271 03 Ignitor Cable 1 14 102445 01 102445 01 102445 01 Piezo Ignitor 1 15 103588 01 103588 01 103588 01 Heat Shield 1 16 103782 01 103782 01 103782 01 Valve Bracket 1 17 M12461 26 M12461 26 M12461 26...

Page 26: ...such other costs related to repairing a defective heater will be the responsibility of the owner TOTHEFULLEXTENTALLOWEDBYTHELAWOFTHEJURISDICTIONTHATGOVERNSTHESALEOFTHEPRODUCT THIS EXPRESS WARRANTY EX...

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